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## plot.phyloExtra.R (2018-07-28)
## Extra Functions for Plotting and Annotating
## Copyright 2016-2018 Emmanuel Paradis
## This file is part of the R-package `ape'.
## See the file ../COPYING for licensing issues.
plotBreakLongEdges <- function(phy, n = 1, ...) {
o <- order(phy$edge.length, decreasing = TRUE)
i <- o[seq_len(n)]
phy$edge.length[i] <- max(phy$edge.length[-i])
plot.phylo(phy, ...)
edgelabels(edge = i, pch = 19, col = "white")
edgelabels("//", i, frame = "n")
}
drawSupportOnEdges <- function(value, ...)
{
lastPP <- get("last_plot.phylo", envir = .PlotPhyloEnv)
n <- lastPP$Ntip
m <- lastPP$Nnode
if (length(value) == m) value <- value[-1]
else if (length(value) != m - 1)
stop("incorrect number of support values")
nodes <- 2:m + n
i <- match(nodes, lastPP$edge[, 2])
edgelabels(value, i, ...)
}
plotTreeTime <- function(phy, tip.dates, show.tip.label = FALSE, y.lim = NULL,
color = TRUE, ...)
{
n <- Ntip(phy)
if (length(tip.dates) != n)
stop("number of dates does not match number of tips of the tree")
if (is.null(y.lim)) y.lim <- c(-n/4, n)
plot(phy, show.tip.label = show.tip.label, y.lim = y.lim, ...)
psr <- par("usr")
if (anyNA(tip.dates)) {
s <- which(!is.na(tip.dates))
tip.dates <- tip.dates[s]
} else s <- 1:n
range.dates <- range(as.numeric(tip.dates))
diff.range <- range.dates[2] - range.dates[1]
footrans <- function(x)
psr[2] * (as.numeric(x) - range.dates[1]) / diff.range
x1 <- footrans(tip.dates)
y1 <- psr[3]
lastPP <- get("last_plot.phylo", envir = .PlotPhyloEnv)
x2 <- lastPP$xx[s]
y2 <- lastPP$yy[s]
x1.scaled <- x1 / max(x1)
col <-
if (color) rgb(x1.scaled, 0, 1 - x1.scaled, alpha = .5)
else grey(x1.scaled, alpha = 0.5)
segments(x1, y1, x2, y2, col = col)
at <- pretty(tip.dates)
axis(1, at = footrans(at), labels = at)
}
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